1438859430 has 64 divisors (see below), whose sum is σ = 4062674880. Its totient is φ = 361124352.

The previous prime is 1438859393. The next prime is 1438859431. The reversal of 1438859430 is 349588341.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438859431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152149 + ... + 161328.

It is an arithmetic number, because the mean of its divisors is an integer number (63479295).

Almost surely, 2^1438859430 is an apocalyptic number.

1438859430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1438859430 is an abundant number, since it is smaller than the sum of its proper divisors (2623815450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1438859430 is a wasteful number, since it uses less digits than its factorization.

1438859430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313510 (or 313504 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 1438859430 is about 37932.3006157022. The cubic root of 1438859430 is about 1128.9450121666.

The spelling of 1438859430 in words is "one billion, four hundred thirty-eight million, eight hundred fifty-nine thousand, four hundred thirty".